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amg4psblas/amgprec/impl/level/amg_z_base_onelev_setsm.F90

115 lines
3.7 KiB
Fortran

!
!
! AMG4PSBLAS version 1.0
! Algebraic Multigrid Package
! based on PSBLAS (Parallel Sparse BLAS version 3.5)
!
! (C) Copyright 2020
!
! Salvatore Filippone
! Pasqua D'Ambra
! Fabio Durastante
!
! Redistribution and use in source and binary forms, with or without
! modification, are permitted provided that the following conditions
! are met:
! 1. Redistributions of source code must retain the above copyright
! notice, this list of conditions and the following disclaimer.
! 2. Redistributions in binary form must reproduce the above copyright
! notice, this list of conditions, and the following disclaimer in the
! documentation and/or other materials provided with the distribution.
! 3. The name of the AMG4PSBLAS group or the names of its contributors may
! not be used to endorse or promote products derived from this
! software without specific written permission.
!
! THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
! ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
! TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
! PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AMG4PSBLAS GROUP OR ITS CONTRIBUTORS
! BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
! CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
! SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
! INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
! CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
! ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! POSSIBILITY OF SUCH DAMAGE.
!
!
subroutine amg_z_base_onelev_setsm(lev,val,info,pos)
use psb_base_mod
use amg_z_prec_mod, amg_protect_name => amg_z_base_onelev_setsm
implicit none
! Arguments
class(amg_z_onelev_type), target, intent(inout) :: lev
class(amg_z_base_smoother_type), intent(in) :: val
integer(psb_ipk_), intent(out) :: info
character(len=*), optional, intent(in) :: pos
! Local variables
integer(psb_ipk_) :: ipos_
character(len=*), parameter :: name='amg_base_onelev_setsm'
info = psb_success_
if (present(pos)) then
select case(psb_toupper(trim(pos)))
case('PRE')
ipos_ = amg_smooth_pre_
case('POST')
ipos_ = amg_smooth_post_
case default
ipos_ = amg_smooth_both_
end select
else
ipos_ = amg_smooth_both_
end if
if (ipos_ == amg_smooth_both_) then
if (allocated(lev%sm2a)) then
call lev%sm2a%free(info)
deallocate(lev%sm2a, stat=info)
lev%sm2 => null()
end if
end if
select case(ipos_)
case(amg_smooth_pre_, amg_smooth_both_)
if (allocated(lev%sm)) then
if (.not.same_type_as(lev%sm,val)) then
call lev%sm%free(info)
deallocate(lev%sm, stat=info)
end if
endif
if (.not.allocated(lev%sm)) then
#ifdef HAVE_MOLD
allocate(lev%sm,mold=val)
#else
allocate(lev%sm,source=val)
#endif
end if
call lev%sm%default()
if (ipos_ == amg_smooth_both_) lev%sm2 => lev%sm
case(amg_smooth_post_)
if (allocated(lev%sm2a)) then
if (.not.same_type_as(lev%sm2a,val)) then
call lev%sm2a%free(info)
deallocate(lev%sm2a, stat=info)
endif
end if
if (.not.allocated(lev%sm2a)) then
#ifdef HAVE_MOLD
allocate(lev%sm2a,mold=val)
#else
allocate(lev%sm2a,source=val)
#endif
end if
call lev%sm2a%default()
lev%sm2 => lev%sm2a
end select
end subroutine amg_z_base_onelev_setsm